function s1_hello(){
	echo "hello,world"
}

function s2_tell_who_i_am(){
	
	whoami
}

function s3_which_distro_do_i_use(){
	cat /etc/os-release | grep ^NAME= | cut -d '"' -f2

}

function s4_view_my_cpu_arch(){
	uname -m
}
function s5_show_first_sci_disk_size(){
	lsblk -l | grep '^sda ' | awk '{print $4}'
}

function s6_show_main_memory_size_in_megebytes(){
	free -m | grep "Mem:" | awk '{print $2}'

}
